20898700

素因数分解:

$2^2\times 5^2\times {\mathrm{103}}^1\times {\mathrm{2029}}^1$

素因数の和:2146

約数の個数: 36

約数和(自身を含む): 45813040

約数和(自身を除く): 24914340

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 103, 206, 412, 515, 1030, 2029, 2060, 2575, 4058, 5150, 8116, 10145, 10300, 20290, 40580, 50725, 101450, 202900, 208987, 417974, 835948, 1044935, 2089870, 4179740, 5224675, 10449350, 20898700]

約数ペア:

[(1, 20898700), (2, 10449350), (4, 5224675), (5, 4179740), (10, 2089870), (20, 1044935), (25, 835948), (50, 417974), (100, 208987), (103, 202900), (206, 101450), (412, 50725), (515, 40580), (1030, 20290), (2029, 10300), (2060, 10145), (2575, 8116), (4058, 5150)]